REET 2015 Level 2 Math and Science Paper

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Question : 143 of 150

Marks: +1, -0

Composition percentage of CaO and SiO₂ in Portland cement is

50 – 60% and 20 – 25%
85 – 90% and 40 – 45%
60 – 68% and 17 – 24%
3 - 10% and 80 – 90%

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